Shiante wrote: ↑Sun Jan 31, 2021 8:20 am
I have bumped into a Lithium Application Note published by OutBack (https://www.outbackpower.com/downloads/ ... _note.pdf
On Page 2, it is written "GTFX/GVFX/GFX series: Not compatible" Mine is a GVFX3048E. This kind of threw me off.
Now I have bumped into someone who is using a KiloVault Lithium-Ion battery (7.5KW) on an Outback FlexPower One - 48V FP1 FXR3048A-01 (https://diysolarforum.com/threads/outba ... ies.15271/
So I am now considering the KiloVault battery.
My questions are: How does a 3KW inverter work with a 7.5Kw battery? It is not a waste? Also would my 15 x 250W panels charge fully the 7.5Kw storage?
Yes, the FX series FX/VFX/GVFX are not compatible with most lithium batteries for the reason stated previously - lack of LBCO/HBCO that fits the battery's voltage profile. The work-around is using the FLEXnet DC to manage inverter shutdown in the extreme voltage events.
The KiloVault HAB 7.5 is a 7.5kWH (kilowatt hour) battery. kWH is a measure of storage capacity. A 3kW inverter, running at maximum output, could drain the battery in roughly 2 hours, if the battery could sustain a 3kW rate of discharge. It's maximum discharge rate is 60A, so at 50V it could sustain 60A x 50V = 3000W, so its a match to the inverter. Typically one would not be running the inverter at full power, so if, say, the average output was 300W, the battery could supply it for roughly 20 hours.
The 3.75kW solar array, putting out 50% of rated capacity, could charge the battery in roughly 4 hours. Depending on location, it may be enough to maintain the battery.
Is the system on OpticsRE? Can the historical consumption and charging data be analyzed? It would give a clearer picture of the battery capacity needed.